[237] And how, bhikkhus, does a bhikkhu dwell happily and at ease, without a resident pupil (antevāsika), without a teacher (ācariya)? Here, bhikkhus, when a bhikkhu has seen a form with the eye, there do not arise in him evil, unwholesome states—memories and intentions (sarasaṅkappā) connected with the fetters. They do not dwell within him. Since evil, unwholesome states do not dwell within him, therefore he is called "without a resident pupil." Evil, unwholesome states do not assail him; therefore he is called "without a teacher." … Furthermore, bhikkhus, when a bhikkhu has tasted a taste with the tongue, there do not arise in him evil, unwholesome states—memories and intentions connected with the fetters. They do not dwell within him. Since evil, unwholesome states do not dwell within him, therefore he is called "without a resident pupil." Evil, unwholesome states do not assail him; therefore he is called "without a teacher." … Furthermore, bhikkhus, when a bhikkhu has cognized a dhamma with the mind, there do not arise in him evil, unwholesome states—memories and intentions connected with the fetters. They do not dwell within him. Since evil, unwholesome states do not dwell within him, therefore he is called "without a resident pupil." Evil, unwholesome states do not assail him; therefore he is called "without a teacher." It is in this way, bhikkhus, that a bhikkhu dwells happily and at ease, without a resident pupil, without a teacher.
Bhikkhus, this holy life (brahmacariya) is lived without a resident pupil, without a teacher. Bhikkhus, a bhikkhu with a resident pupil, with a teacher, dwells in suffering, not at ease; a bhikkhu without a resident pupil, without a teacher, dwells happily, at ease.
The sixth.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.